Product Description:

The 2TB140.9 terminal block is produced by B & R Automation and belongs to the 0TB Terminal Blocks series. It is a pluggable wiring interface intended to channel control signals and low-power mains supplies within industrial automation enclosures. By presenting a fixed row of screw-secured contacts that detach as a single unit, the block simplifies panel fabrication and maintains clear separation between control levels and operator wiring.

As a wiring element, the block employs a Screw Clamp retention system, so conductors are fixed by torque instead of spring tension. Each contact can carry 12 A/contact, allowing the component to route modest power or multiple sensor feeds without exceeding copper limits. The rated insulation withstands 250 VAC, matching common control transformer secondary voltage. The block has 40 pins, providing a dense signal matrix, while a row spacing of 6.38 mm keeps adjacent circuits physically separated. Insulation distance along the surface between rows endures a dielectric stress of 5 kV, supporting reliable operation when transient overvoltages appear.

Creepage along each row measures 4.5 mm, supplying additional surface distance to offset contamination or condensation that might form inside the cabinet. Individual terminal spacing is fixed at 5.08 mm, and wiring is released through a mechanical latch rather than by prying, so the entire block can be lifted in one motion. Cable ties serve as the designated stress-relief method, limiting strain migration into the clamps. The screws are tightened with a 3.5 mm driver, helping maintain consistent torque across all points. Between neighboring terminals, the creepage distance is 3.2 mm, and the dielectric path through the molding tolerates 3.5 kV, giving the assembly a clear margin above its nominal working voltage.